Charles b



(No Model.)

C. B. COX.

DUMB WAITBR SAFETY CLUTCH. No.'592,698. Patented Oct. 26, 1897.

WIT/VESSES.' VVENTR Cdj EY mdf@ UNITED STATES VPATENT -Frica CHARLES B. COX, OF NEW YORK, N. Y.

DUMB-WAITER SAFETY-CLUTCH.

SPECIFICATION forming part of Letters Patent No. 592,698, dated October 26, 1897. Application filed November 28, 1896. Serial No. 613,121. (No model.)

To all whom it may concern: Now it will be seen that when the several Beit known thatl, CHARLES B. COX, of New parts are in the position illustrated in Figs. York city, in the county and State of New l, 2, and 3 the disk F is out of engagement 5 54 York, have invented a new and Improved with the rod H. Consequently the cage A 5 Dumb-Waiter Safety-Clutch,of whichthe folcan be moved up or down in the shaft in the lowing is a full, clear, and exact description. usual manner. Now in case the rope or cable The object of the invention is to provide a B breaks the plate D, which is made of spring new and improved dumb-waiter safety-clutch, metal, swings downward into the position 6o which is simple and durable in construction shown in dotted lines in Fig. 3, whereby a 1 o and arranged to securely hold the cage in place turning motion is given to the disk F, and the in case of the breaking of the supporting rope. latter is moved with its peripheral face in or cable. Y contactwith the rod H, extending through the The invention consists of certain parts and guide G', and thus the disk F in connection 65 details and combinations of the same, as will withA the guide G clutches the fixed rod H, so I5 be fully described hereinafter and then as to securely hold the cageA in position, as

pointed out in the claims. soon as the rope or cable B is broken.

Reference is to be had to the accompanying By reference to Fig. 3 it will be seen that drawings, forming a part of this specication, the heavier the load in the cage A the more 7o in which similar characters of reference indifirmly the disk F will move in contact with 2o cate corresponding parts in all the Views. the rod H, as the downward pull of the cage Figure l is a perspective View of the-im- Ahas a tendency to draw the peripheral face provement as applied and with parts in secof the eccentric disk F-in contactwith the tion. Fig. 2 is a large sectional plan View of rod H. 75 the improvement on the line 2 2 of Fig. 3. The connection of the eye Cwith the springz 5 Fig. 3 is a sectional side elevation of the same plate D is preferably as shown in Fig. l-that on the line 3 3 of Fig. 2; and Fig. 4 is an enis, by means of nuts C', engaging the under larged side elevation of the fastening device side of the spring-plate, so that by adjusting for the rope or cable, part being in section. thenuts the position of the plate D can be 8o The improved safety-clutch, as illustratedv regulated to hold the disk F more or less with 3o in the drawings, is arranged on a cage A of its peripheral face from the rod H.

the usual construction and supported on the It will be seen that by the arrangement decounterbalance-supporting rope or cable B, scribed the cage A is securely held in place having its lower end connected with astaple in the shaft whenever the rope or cable B 85 C, attached to a plate or arm D, extending breaks, so that accidents by the downward 3 5 under the top of the cage A and secured movement of the cage are prevented.

thereto at one end by a bolt D', as is plainly It is evident that the device may be used shown in Fig. l. The free end of the plate D in passenger and freight elevators of any conis pivotally connected at D2 with a link D3, struction. 9o pivoted on one side of a clampingfarm F, Having thus described my invention, I 4o preferably made in the shape of a disk, claim as new and desire to secure by Letters mounted eccentrically on a shaft F', turning Patentin suitable bearings in the sides of the casing l. Adumb-waiter safetyclutch,comprising G, secured to the top of the cage A at one avertically-disposed rod fixed in the shaft, a 95 corner thereof, as is plainly shown in the casing held on the cage and forming a guide 45 drawings. for the said rod, a clamping device journaled The casing G is provided with a verticallyin the said casing and adapted to engage the disposed guide G', through which passes said rod to clamp the latter in the casing, and loosely a rod, rope, or the like H, secured in a springplate secured at one end to the cage loo the shaft in which the cage A is running, the and connected at its other end with the said 5o said rod being adapted to be engaged by the clamping device, the `said plate being conperipheral face of the disk F whenever the nected with the'operating rope or cable for the rope o r cable B breaks. cage, substantially 'as shown and described.

Adumb-Waiteisafety-clutch,comprising tachcd t0 the cage, and :L staple :Ldjustabiy :1,verticaHy-disposed rod fixed in the shaft, :L heid on the Said spring-plate and connected 1o casing adapted to be secured on the cage :uid with the Supporting rope oicabie for the cage, formed with a guidewny for the said rod, :L substantially as shown and described.

clamping device jouiiiavied in the Said casing CHARLES B. COX. and adapted to engage the said rod :md clamp fitnessesz the latter to the casing, :L spring-plate cou- THEO. G. HOSTER,

nccted with the said clamping device and ab A. A. HOPKINS. 

